(19)
(11) EP 1 614 895 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.06.2007 Bulletin 2007/26

(43) Date of publication A2:
11.01.2006 Bulletin 2006/02

(21) Application number: 05012043.5

(22) Date of filing: 03.06.2005
(51) International Patent Classification (IPC): 
F04B 23/04(2006.01)
 F04B 23/06(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 09.07.2004 JP 2004202643

(71) Applicant: KANZAKI KOKYUKOKI MFG. CO., LTD.
Amagasaki-shi, Hyogo 661-0981 (JP)

(72) Inventors:
  • Kawamura, Masahisa
    Amagasaki-shi Hyogo 661-0981 (JP)
  • Kamikawa, Nobuhisa
    Amagasaki-shi Hyogo 661-0981 (JP)
  • Nozaki, Takeaki
    Amagasaki-shi Hyogo 661-0981 (JP)
  • Sasahara, Kengo
    Amagasaki-shi Hyogo 661-0981 (JP)

(74) Representative: Reinhard - Skuhra - Weise & Partner 
Postfach 44 01 51
80750 München
80750 München (DE)

   


(54) Pump system


(57) There is provided a pump system including; a plurality of hydraulic pump bodies arranged in parallel; a plurality of pump shafts respectively driving the plurality of hydraulic pump bodies; a power transmission mechanism operatively connecting the plurality of pump shafts; and a pump case which accommodating the plurality of hydraulic pump bodies and the power transmission mechanism, and supports the plurality of pump shafts in a rotatable manner about an axis line, the pump case including a port block formed with supply/discharge oil passages for the plurality of pump bodies. One pump shaft of the plurality of pump shafts has a first end extending outward from the pump case so as to form an input end operatively connected to a driving source. The one pump shaft is directly or indirectly supported by the pump case at a region which is closer to the input end via a plurality of bearing members.







Search report